[PATCH net-next 1/9] net: hns3: Add support for serdes loopback selftest
From: Salil Mehta
Date: Sun Aug 12 2018 - 05:48:44 EST
From: Peng Li <lipeng321@xxxxxxxxxx>
This patch adds support for serdes loopback selftest in hns3
driver.
Signed-off-by: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
Signed-off-by: Salil Mehta <salil.mehta@xxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 7 ++-
.../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 12 +++++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 57 +++++++++++++++++++++-
3 files changed, 73 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index 80ba95d76260..f4710e498c59 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -53,7 +53,7 @@ static const struct hns3_stats hns3_rxq_stats[] = {
#define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
-#define HNS3_SELF_TEST_TPYE_NUM 1
+#define HNS3_SELF_TEST_TPYE_NUM 2
#define HNS3_NIC_LB_TEST_PKT_NUM 1
#define HNS3_NIC_LB_TEST_RING_ID 0
#define HNS3_NIC_LB_TEST_PACKET_SIZE 128
@@ -78,6 +78,7 @@ static int hns3_lp_setup(struct net_device *ndev, enum hnae3_loop loop, bool en)
return -EOPNOTSUPP;
switch (loop) {
+ case HNAE3_MAC_INTER_LOOP_SERDES:
case HNAE3_MAC_INTER_LOOP_MAC:
ret = h->ae_algo->ops->set_loopback(h, loop, en);
break;
@@ -303,6 +304,10 @@ static void hns3_self_test(struct net_device *ndev,
st_param[HNAE3_MAC_INTER_LOOP_MAC][1] =
h->flags & HNAE3_SUPPORT_MAC_LOOPBACK;
+ st_param[HNAE3_MAC_INTER_LOOP_SERDES][0] = HNAE3_MAC_INTER_LOOP_SERDES;
+ st_param[HNAE3_MAC_INTER_LOOP_SERDES][1] =
+ h->flags & HNAE3_SUPPORT_SERDES_LOOPBACK;
+
if (if_running)
dev_close(ndev);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index cd0a4f228470..821d4c2f84bd 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -94,6 +94,7 @@ enum hclge_opcode_type {
HCLGE_OPC_QUERY_LINK_STATUS = 0x0307,
HCLGE_OPC_CONFIG_MAX_FRM_SIZE = 0x0308,
HCLGE_OPC_CONFIG_SPEED_DUP = 0x0309,
+ HCLGE_OPC_SERDES_LOOPBACK = 0x0315,
/* PFC/Pause commands */
HCLGE_OPC_CFG_MAC_PAUSE_EN = 0x0701,
@@ -775,6 +776,17 @@ struct hclge_reset_cmd {
u8 fun_reset_vfid;
u8 rsv[22];
};
+
+#define HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B BIT(0)
+#define HCLGE_CMD_SERDES_DONE_B BIT(0)
+#define HCLGE_CMD_SERDES_SUCCESS_B BIT(1)
+struct hclge_serdes_lb_cmd {
+ u8 mask;
+ u8 enable;
+ u8 result;
+ u8 rsv[21];
+};
+
#define HCLGE_DEFAULT_TX_BUF 0x4000 /* 16k bytes */
#define HCLGE_TOTAL_PKT_BUF 0x108000 /* 1.03125M bytes */
#define HCLGE_DEFAULT_DV 0xA000 /* 40k byte */
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index fc813b7f20e8..99dda5051f5f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -787,9 +787,10 @@ static int hclge_get_sset_count(struct hnae3_handle *handle, int stringset)
hdev->hw.mac.speed == HCLGE_MAC_SPEED_1G) {
count += 1;
handle->flags |= HNAE3_SUPPORT_MAC_LOOPBACK;
- } else {
- count = -EOPNOTSUPP;
}
+
+ count ++;
+ handle->flags |= HNAE3_SUPPORT_SERDES_LOOPBACK;
} else if (stringset == ETH_SS_STATS) {
count = ARRAY_SIZE(g_mac_stats_string) +
ARRAY_SIZE(g_all_32bit_stats_string) +
@@ -3670,6 +3671,55 @@ static int hclge_set_mac_loopback(struct hclge_dev *hdev, bool en)
return ret;
}
+static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en)
+{
+#define HCLGE_SERDES_RETRY_MS 10
+#define HCLGE_SERDES_RETRY_NUM 100
+ struct hclge_serdes_lb_cmd *req;
+ struct hclge_desc desc;
+ int ret, i = 0;
+
+ req = (struct hclge_serdes_lb_cmd *)&desc.data[0];
+ hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_SERDES_LOOPBACK, false);
+
+ if (en) {
+ req->enable = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+ req->mask = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+ } else {
+ req->mask = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+ }
+
+ ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+ if (ret) {
+ dev_err(&hdev->pdev->dev,
+ "serdes loopback set fail, ret = %d\n", ret);
+ return ret;
+ }
+
+ do {
+ msleep(HCLGE_SERDES_RETRY_MS);
+ hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_SERDES_LOOPBACK,
+ true);
+ ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+ if (ret) {
+ dev_err(&hdev->pdev->dev,
+ "serdes loopback get, ret = %d\n", ret);
+ return ret;
+ }
+ } while (++i < HCLGE_SERDES_RETRY_NUM &&
+ !(req->result & HCLGE_CMD_SERDES_DONE_B));
+
+ if (!(req->result & HCLGE_CMD_SERDES_DONE_B)) {
+ dev_err(&hdev->pdev->dev, "serdes loopback set timeout\n");
+ return -EBUSY;
+ } else if (!(req->result & HCLGE_CMD_SERDES_SUCCESS_B)) {
+ dev_err(&hdev->pdev->dev, "serdes loopback set failed in fw\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
static int hclge_set_loopback(struct hnae3_handle *handle,
enum hnae3_loop loop_mode, bool en)
{
@@ -3681,6 +3731,9 @@ static int hclge_set_loopback(struct hnae3_handle *handle,
case HNAE3_MAC_INTER_LOOP_MAC:
ret = hclge_set_mac_loopback(hdev, en);
break;
+ case HNAE3_MAC_INTER_LOOP_SERDES:
+ ret = hclge_set_serdes_loopback(hdev, en);
+ break;
default:
ret = -ENOTSUPP;
dev_err(&hdev->pdev->dev,
--
2.11.0